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Firebase Cloud Functions Triggers with Two varibles

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 Although firebase functions document not mentioned about how many varible values can be exhist in firebase onWrite() tirgger , I have used it upto 2 levles without any issue.  For an exaplen in the blow code , I have consider the change in list under the userId ,, The value will be wrriten under the varible of user.  exports.testFunctionName = functions.database.ref('/user-list/{user}/{pushId}').onWrite(( change,context) => {             const original =  change.after.val();             var pushId=context.params.pushId;                 var userId=context.params.user; ...